drivers/gpu/drm/i915/intel_drv.h

   1 /*
   2  * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
   3  * Copyright (c) 2007-2008 Intel Corporation
   4  *   Jesse Barnes <jesse.barnes@intel.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23  * IN THE SOFTWARE.
  24  */
  25 #ifndef __INTEL_DRV_H__
  26 #define __INTEL_DRV_H__
  27
  28 #include <linux/async.h>
  29 #include <linux/i2c.h>
  30 #include <linux/hdmi.h>
  31 #include <drm/i915_drm.h>
  32 #include "i915_drv.h"
  33 #include <drm/drm_crtc.h>
  34 #include <drm/drm_crtc_helper.h>
  35 #include <drm/drm_fb_helper.h>
  36 #include <drm/drm_dp_dual_mode_helper.h>
  37 #include <drm/drm_dp_mst_helper.h>
  38 #include <drm/drm_rect.h>
  39 #include <drm/drm_atomic.h>
  40
  41 /**
  42  * _wait_for - magic (register) wait macro
  43  *
  44  * Does the right thing for modeset paths when run under kdgb or similar atomic
  45  * contexts. Note that it's important that we check the condition again after
  46  * having timed out, since the timeout could be due to preemption or similar and
  47  * we've never had a chance to check the condition before the timeout.
  48  *
  49  * TODO: When modesetting has fully transitioned to atomic, the below
  50  * drm_can_sleep() can be removed and in_atomic()/!in_atomic() asserts
  51  * added.
  52  */
  53 #define _wait_for(COND, US, W) ({ \
  54         unsigned long timeout__ = jiffies + usecs_to_jiffies(US) + 1;   \
  55         int ret__;                                                      \
  56         for (;;) {                                                      \
  57                 bool expired__ = time_after(jiffies, timeout__);        \
  58                 if (COND) {                                             \
  59                         ret__ = 0;                                      \
  60                         break;                                          \
  61                 }                                                       \
  62                 if (expired__) {                                        \
  63                         ret__ = -ETIMEDOUT;                             \
  64                         break;                                          \
  65                 }                                                       \
  66                 if ((W) && drm_can_sleep()) {                           \
  67                         usleep_range((W), (W)*2);                       \
  68                 } else {                                                \
  69                         cpu_relax();                                    \
  70                 }                                                       \
  71         }                                                               \
  72         ret__;                                                          \
  73 })
  74
  75 #define wait_for(COND, MS)              _wait_for((COND), (MS) * 1000, 1000)
  76
  77 /* If CONFIG_PREEMPT_COUNT is disabled, in_atomic() always reports false. */
  78 #if defined(CONFIG_DRM_I915_DEBUG) && defined(CONFIG_PREEMPT_COUNT)
  79 # define _WAIT_FOR_ATOMIC_CHECK(ATOMIC) WARN_ON_ONCE((ATOMIC) && !in_atomic())
  80 #else
  81 # define _WAIT_FOR_ATOMIC_CHECK(ATOMIC) do { } while (0)
  82 #endif
  83
  84 #define _wait_for_atomic(COND, US, ATOMIC) \
  85 ({ \
  86         int cpu, ret, timeout = (US) * 1000; \
  87         u64 base; \
  88         _WAIT_FOR_ATOMIC_CHECK(ATOMIC); \
  89         BUILD_BUG_ON((US) > 50000); \
  90         if (!(ATOMIC)) { \
  91                 preempt_disable(); \
  92                 cpu = smp_processor_id(); \
  93         } \
  94         base = local_clock(); \
  95         for (;;) { \
  96                 u64 now = local_clock(); \
  97                 if (!(ATOMIC)) \
  98                         preempt_enable(); \
  99                 if (COND) { \
 100                         ret = 0; \
 101                         break; \
 102                 } \
 103                 if (now - base >= timeout) { \
 104                         ret = -ETIMEDOUT; \
 105                         break; \
 106                 } \
 107                 cpu_relax(); \
 108                 if (!(ATOMIC)) { \
 109                         preempt_disable(); \
 110                         if (unlikely(cpu != smp_processor_id())) { \
 111                                 timeout -= now - base; \
 112                                 cpu = smp_processor_id(); \
 113                                 base = local_clock(); \
 114                         } \
 115                 } \
 116         } \
 117         ret; \
 118 })
 119
 120 #define wait_for_us(COND, US) \
 121 ({ \
 122         int ret__; \
 123         BUILD_BUG_ON(!__builtin_constant_p(US)); \
 124         if ((US) > 10) \
 125                 ret__ = _wait_for((COND), (US), 10); \
 126         else \
 127                 ret__ = _wait_for_atomic((COND), (US), 0); \
 128         ret__; \
 129 })
 130
 131 #define wait_for_atomic(COND, MS)       _wait_for_atomic((COND), (MS) * 1000, 1)
 132 #define wait_for_atomic_us(COND, US)    _wait_for_atomic((COND), (US), 1)
 133
 134 #define KHz(x) (1000 * (x))
 135 #define MHz(x) KHz(1000 * (x))
 136
 137 /*
 138  * Display related stuff
 139  */
 140
 141 /* store information about an Ixxx DVO */
 142 /* The i830->i865 use multiple DVOs with multiple i2cs */
 143 /* the i915, i945 have a single sDVO i2c bus - which is different */
 144 #define MAX_OUTPUTS 6
 145 /* maximum connectors per crtcs in the mode set */
 146
 147 /* Maximum cursor sizes */
 148 #define GEN2_CURSOR_WIDTH 64
 149 #define GEN2_CURSOR_HEIGHT 64
 150 #define MAX_CURSOR_WIDTH 256
 151 #define MAX_CURSOR_HEIGHT 256
 152
 153 #define INTEL_I2C_BUS_DVO 1
 154 #define INTEL_I2C_BUS_SDVO 2
 155
 156 /* these are outputs from the chip - integrated only
 157    external chips are via DVO or SDVO output */
 158 enum intel_output_type {
 159         INTEL_OUTPUT_UNUSED = 0,
 160         INTEL_OUTPUT_ANALOG = 1,
 161         INTEL_OUTPUT_DVO = 2,
 162         INTEL_OUTPUT_SDVO = 3,
 163         INTEL_OUTPUT_LVDS = 4,
 164         INTEL_OUTPUT_TVOUT = 5,
 165         INTEL_OUTPUT_HDMI = 6,
 166         INTEL_OUTPUT_DP = 7,
 167         INTEL_OUTPUT_EDP = 8,
 168         INTEL_OUTPUT_DSI = 9,
 169         INTEL_OUTPUT_UNKNOWN = 10,
 170         INTEL_OUTPUT_DP_MST = 11,
 171 };
 172
 173 #define INTEL_DVO_CHIP_NONE 0
 174 #define INTEL_DVO_CHIP_LVDS 1
 175 #define INTEL_DVO_CHIP_TMDS 2
 176 #define INTEL_DVO_CHIP_TVOUT 4
 177
 178 #define INTEL_DSI_VIDEO_MODE    0
 179 #define INTEL_DSI_COMMAND_MODE  1
 180
 181 struct intel_framebuffer {
 182         struct drm_framebuffer base;
 183         struct drm_i915_gem_object *obj;
 184         struct intel_rotation_info rot_info;
 185
 186         /* for each plane in the normal GTT view */
 187         struct {
 188                 unsigned int x, y;
 189         } normal[2];
 190         /* for each plane in the rotated GTT view */
 191         struct {
 192                 unsigned int x, y;
 193                 unsigned int pitch; /* pixels */
 194         } rotated[2];
 195 };
 196
 197 struct intel_fbdev {
 198         struct drm_fb_helper helper;
 199         struct intel_framebuffer *fb;
 200         struct i915_vma *vma;
 201         async_cookie_t cookie;
 202         int preferred_bpp;
 203 };
 204
 205 struct intel_encoder {
 206         struct drm_encoder base;
 207
 208         enum intel_output_type type;
 209         enum port port;
 210         unsigned int cloneable;
 211         void (*hot_plug)(struct intel_encoder *);
 212         bool (*compute_config)(struct intel_encoder *,
 213                                struct intel_crtc_state *,
 214                                struct drm_connector_state *);
 215         void (*pre_pll_enable)(struct intel_encoder *,
 216                                struct intel_crtc_state *,
 217                                struct drm_connector_state *);
 218         void (*pre_enable)(struct intel_encoder *,
 219                            struct intel_crtc_state *,
 220                            struct drm_connector_state *);
 221         void (*enable)(struct intel_encoder *,
 222                        struct intel_crtc_state *,
 223                        struct drm_connector_state *);
 224         void (*disable)(struct intel_encoder *,
 225                         struct intel_crtc_state *,
 226                         struct drm_connector_state *);
 227         void (*post_disable)(struct intel_encoder *,
 228                              struct intel_crtc_state *,
 229                              struct drm_connector_state *);
 230         void (*post_pll_disable)(struct intel_encoder *,
 231                                  struct intel_crtc_state *,
 232                                  struct drm_connector_state *);
 233         /* Read out the current hw state of this connector, returning true if
 234          * the encoder is active. If the encoder is enabled it also set the pipe
 235          * it is connected to in the pipe parameter. */
 236         bool (*get_hw_state)(struct intel_encoder *, enum pipe *pipe);
 237         /* Reconstructs the equivalent mode flags for the current hardware
 238          * state. This must be called _after_ display->get_pipe_config has
 239          * pre-filled the pipe config. Note that intel_encoder->base.crtc must
 240          * be set correctly before calling this function. */
 241         void (*get_config)(struct intel_encoder *,
 242                            struct intel_crtc_state *pipe_config);
 243         /*
 244          * Called during system suspend after all pending requests for the
 245          * encoder are flushed (for example for DP AUX transactions) and
 246          * device interrupts are disabled.
 247          */
 248         void (*suspend)(struct intel_encoder *);
 249         int crtc_mask;
 250         enum hpd_pin hpd_pin;
 251         /* for communication with audio component; protected by av_mutex */
 252         const struct drm_connector *audio_connector;
 253 };
 254
 255 struct intel_panel {
 256         struct drm_display_mode *fixed_mode;
 257         struct drm_display_mode *downclock_mode;
 258         int fitting_mode;
 259
 260         /* backlight */
 261         struct {
 262                 bool present;
 263                 u32 level;
 264                 u32 min;
 265                 u32 max;
 266                 bool enabled;
 267                 bool combination_mode;  /* gen 2/4 only */
 268                 bool active_low_pwm;
 269                 bool alternate_pwm_increment;   /* lpt+ */
 270
 271                 /* PWM chip */
 272                 bool util_pin_active_low;       /* bxt+ */
 273                 u8 controller;          /* bxt+ only */
 274                 struct pwm_device *pwm;
 275
 276                 struct backlight_device *device;
 277
 278                 /* Connector and platform specific backlight functions */
 279                 int (*setup)(struct intel_connector *connector, enum pipe pipe);
 280                 uint32_t (*get)(struct intel_connector *connector);
 281                 void (*set)(struct intel_connector *connector, uint32_t level);
 282                 void (*disable)(struct intel_connector *connector);
 283                 void (*enable)(struct intel_connector *connector);
 284                 uint32_t (*hz_to_pwm)(struct intel_connector *connector,
 285                                       uint32_t hz);
 286                 void (*power)(struct intel_connector *, bool enable);
 287         } backlight;
 288 };
 289
 290 struct intel_connector {
 291         struct drm_connector base;
 292         /*
 293          * The fixed encoder this connector is connected to.
 294          */
 295         struct intel_encoder *encoder;
 296
 297         /* ACPI device id for ACPI and driver cooperation */
 298         u32 acpi_device_id;
 299
 300         /* Reads out the current hw, returning true if the connector is enabled
 301          * and active (i.e. dpms ON state). */
 302         bool (*get_hw_state)(struct intel_connector *);
 303
 304         /* Panel info for eDP and LVDS */
 305         struct intel_panel panel;
 306
 307         /* Cached EDID for eDP and LVDS. May hold ERR_PTR for invalid EDID. */
 308         struct edid *edid;
 309         struct edid *detect_edid;
 310
 311         /* since POLL and HPD connectors may use the same HPD line keep the native
 312            state of connector->polled in case hotplug storm detection changes it */
 313         u8 polled;
 314
 315         void *port; /* store this opaque as its illegal to dereference it */
 316
 317         struct intel_dp *mst_port;
 318 };
 319
 320 struct dpll {
 321         /* given values */
 322         int n;
 323         int m1, m2;
 324         int p1, p2;
 325         /* derived values */
 326         int     dot;
 327         int     vco;
 328         int     m;
 329         int     p;
 330 };
 331
 332 struct intel_atomic_state {
 333         struct drm_atomic_state base;
 334
 335         unsigned int cdclk;
 336
 337         /*
 338          * Calculated device cdclk, can be different from cdclk
 339          * only when all crtc's are DPMS off.
 340          */
 341         unsigned int dev_cdclk;
 342
 343         bool dpll_set, modeset;
 344
 345         /*
 346          * Does this transaction change the pipes that are active?  This mask
 347          * tracks which CRTC's have changed their active state at the end of
 348          * the transaction (not counting the temporary disable during modesets).
 349          * This mask should only be non-zero when intel_state->modeset is true,
 350          * but the converse is not necessarily true; simply changing a mode may
 351          * not flip the final active status of any CRTC's
 352          */
 353         unsigned int active_pipe_changes;
 354
 355         unsigned int active_crtcs;
 356         unsigned int min_pixclk[I915_MAX_PIPES];
 357
 358         /* SKL/KBL Only */
 359         unsigned int cdclk_pll_vco;
 360
 361         struct intel_shared_dpll_config shared_dpll[I915_NUM_PLLS];
 362
 363         /*
 364          * Current watermarks can't be trusted during hardware readout, so
 365          * don't bother calculating intermediate watermarks.
 366          */
 367         bool skip_intermediate_wm;
 368
 369         /* Gen9+ only */
 370         struct skl_wm_values wm_results;
 371
 372         struct i915_sw_fence commit_ready;
 373 };
 374
 375 struct intel_plane_state {
 376         struct drm_plane_state base;
 377         struct drm_rect clip;
 378
 379         struct {
 380                 u32 offset;
 381                 int x, y;
 382         } main;
 383         struct {
 384                 u32 offset;
 385                 int x, y;
 386         } aux;
 387
 388         /*
 389          * scaler_id
 390          *    = -1 : not using a scaler
 391          *    >=  0 : using a scalers
 392          *
 393          * plane requiring a scaler:
 394          *   - During check_plane, its bit is set in
 395          *     crtc_state->scaler_state.scaler_users by calling helper function
 396          *     update_scaler_plane.
 397          *   - scaler_id indicates the scaler it got assigned.
 398          *
 399          * plane doesn't require a scaler:
 400          *   - this can happen when scaling is no more required or plane simply
 401          *     got disabled.
 402          *   - During check_plane, corresponding bit is reset in
 403          *     crtc_state->scaler_state.scaler_users by calling helper function
 404          *     update_scaler_plane.
 405          */
 406         int scaler_id;
 407
 408         struct drm_intel_sprite_colorkey ckey;
 409 };
 410
 411 struct intel_initial_plane_config {
 412         struct intel_framebuffer *fb;
 413         unsigned int tiling;
 414         int size;
 415         u32 base;
 416 };
 417
 418 #define SKL_MIN_SRC_W 8
 419 #define SKL_MAX_SRC_W 4096
 420 #define SKL_MIN_SRC_H 8
 421 #define SKL_MAX_SRC_H 4096
 422 #define SKL_MIN_DST_W 8
 423 #define SKL_MAX_DST_W 4096
 424 #define SKL_MIN_DST_H 8
 425 #define SKL_MAX_DST_H 4096
 426
 427 struct intel_scaler {
 428         int in_use;
 429         uint32_t mode;
 430 };
 431
 432 struct intel_crtc_scaler_state {
 433 #define SKL_NUM_SCALERS 2
 434         struct intel_scaler scalers[SKL_NUM_SCALERS];
 435
 436         /*
 437          * scaler_users: keeps track of users requesting scalers on this crtc.
 438          *
 439          *     If a bit is set, a user is using a scaler.
 440          *     Here user can be a plane or crtc as defined below:
 441          *       bits 0-30 - plane (bit position is index from drm_plane_index)
 442          *       bit 31    - crtc
 443          *
 444          * Instead of creating a new index to cover planes and crtc, using
 445          * existing drm_plane_index for planes which is well less than 31
 446          * planes and bit 31 for crtc. This should be fine to cover all
 447          * our platforms.
 448          *
 449          * intel_atomic_setup_scalers will setup available scalers to users
 450          * requesting scalers. It will gracefully fail if request exceeds
 451          * avilability.
 452          */
 453 #define SKL_CRTC_INDEX 31
 454         unsigned scaler_users;
 455
 456         /* scaler used by crtc for panel fitting purpose */
 457         int scaler_id;
 458 };
 459
 460 /* drm_mode->private_flags */
 461 #define I915_MODE_FLAG_INHERITED 1
 462
 463 struct intel_pipe_wm {
 464         struct intel_wm_level wm[5];
 465         struct intel_wm_level raw_wm[5];
 466         uint32_t linetime;
 467         bool fbc_wm_enabled;
 468         bool pipe_enabled;
 469         bool sprites_enabled;
 470         bool sprites_scaled;
 471 };
 472
 473 struct skl_plane_wm {
 474         struct skl_wm_level wm[8];
 475         struct skl_wm_level trans_wm;
 476 };
 477
 478 struct skl_pipe_wm {
 479         struct skl_plane_wm planes[I915_MAX_PLANES];
 480         uint32_t linetime;
 481 };
 482
 483 struct intel_crtc_wm_state {
 484         union {
 485                 struct {
 486                         /*
 487                          * Intermediate watermarks; these can be
 488                          * programmed immediately since they satisfy
 489                          * both the current configuration we're
 490                          * switching away from and the new
 491                          * configuration we're switching to.
 492                          */
 493                         struct intel_pipe_wm intermediate;
 494
 495                         /*
 496                          * Optimal watermarks, programmed post-vblank
 497                          * when this state is committed.
 498                          */
 499                         struct intel_pipe_wm optimal;
 500                 } ilk;
 501
 502                 struct {
 503                         /* gen9+ only needs 1-step wm programming */
 504                         struct skl_pipe_wm optimal;
 505                         struct skl_ddb_entry ddb;
 506                 } skl;
 507         };
 508
 509         /*
 510          * Platforms with two-step watermark programming will need to
 511          * update watermark programming post-vblank to switch from the
 512          * safe intermediate watermarks to the optimal final
 513          * watermarks.
 514          */
 515         bool need_postvbl_update;
 516 };
 517
 518 struct intel_crtc_state {
 519         struct drm_crtc_state base;
 520
 521         /**
 522          * quirks - bitfield with hw state readout quirks
 523          *
 524          * For various reasons the hw state readout code might not be able to
 525          * completely faithfully read out the current state. These cases are
 526          * tracked with quirk flags so that fastboot and state checker can act
 527          * accordingly.
 528          */
 529 #define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS       (1<<0) /* unreliable sync mode.flags */
 530         unsigned long quirks;
 531
 532         unsigned fb_bits; /* framebuffers to flip */
 533         bool update_pipe; /* can a fast modeset be performed? */
 534         bool disable_cxsr;
 535         bool update_wm_pre, update_wm_post; /* watermarks are updated */
 536         bool fb_changed; /* fb on any of the planes is changed */
 537
 538         /* Pipe source size (ie. panel fitter input size)
 539          * All planes will be positioned inside this space,
 540          * and get clipped at the edges. */
 541         int pipe_src_w, pipe_src_h;
 542
 543         /* Whether to set up the PCH/FDI. Note that we never allow sharing
 544          * between pch encoders and cpu encoders. */
 545         bool has_pch_encoder;
 546
 547         /* Are we sending infoframes on the attached port */
 548         bool has_infoframe;
 549
 550         /* CPU Transcoder for the pipe. Currently this can only differ from the
 551          * pipe on Haswell and later (where we have a special eDP transcoder)
 552          * and Broxton (where we have special DSI transcoders). */
 553         enum transcoder cpu_transcoder;
 554
 555         /*
 556          * Use reduced/limited/broadcast rbg range, compressing from the full
 557          * range fed into the crtcs.
 558          */
 559         bool limited_color_range;
 560
 561         /* Bitmask of encoder types (enum intel_output_type)
 562          * driven by the pipe.
 563          */
 564         unsigned int output_types;
 565
 566         /* Whether we should send NULL infoframes. Required for audio. */
 567         bool has_hdmi_sink;
 568
 569         /* Audio enabled on this pipe. Only valid if either has_hdmi_sink or
 570          * has_dp_encoder is set. */
 571         bool has_audio;
 572
 573         /*
 574          * Enable dithering, used when the selected pipe bpp doesn't match the
 575          * plane bpp.
 576          */
 577         bool dither;
 578
 579         /* Controls for the clock computation, to override various stages. */
 580         bool clock_set;
 581
 582         /* SDVO TV has a bunch of special case. To make multifunction encoders
 583          * work correctly, we need to track this at runtime.*/
 584         bool sdvo_tv_clock;
 585
 586         /*
 587          * crtc bandwidth limit, don't increase pipe bpp or clock if not really
 588          * required. This is set in the 2nd loop of calling encoder's
 589          * ->compute_config if the first pick doesn't work out.
 590          */
 591         bool bw_constrained;
 592
 593         /* Settings for the intel dpll used on pretty much everything but
 594          * haswell. */
 595         struct dpll dpll;
 596
 597         /* Selected dpll when shared or NULL. */
 598         struct intel_shared_dpll *shared_dpll;
 599
 600         /* Actual register state of the dpll, for shared dpll cross-checking. */
 601         struct intel_dpll_hw_state dpll_hw_state;
 602
 603         /* DSI PLL registers */
 604         struct {
 605                 u32 ctrl, div;
 606         } dsi_pll;
 607
 608         int pipe_bpp;
 609         struct intel_link_m_n dp_m_n;
 610
 611         /* m2_n2 for eDP downclock */
 612         struct intel_link_m_n dp_m2_n2;
 613         bool has_drrs;
 614
 615         /*
 616          * Frequence the dpll for the port should run at. Differs from the
 617          * adjusted dotclock e.g. for DP or 12bpc hdmi mode. This is also
 618          * already multiplied by pixel_multiplier.
 619          */
 620         int port_clock;
 621
 622         /* Used by SDVO (and if we ever fix it, HDMI). */
 623         unsigned pixel_multiplier;
 624
 625         uint8_t lane_count;
 626
 627         /*
 628          * Used by platforms having DP/HDMI PHY with programmable lane
 629          * latency optimization.
 630          */
 631         uint8_t lane_lat_optim_mask;
 632
 633         /* Panel fitter controls for gen2-gen4 + VLV */
 634         struct {
 635                 u32 control;
 636                 u32 pgm_ratios;
 637                 u32 lvds_border_bits;
 638         } gmch_pfit;
 639
 640         /* Panel fitter placement and size for Ironlake+ */
 641         struct {
 642                 u32 pos;
 643                 u32 size;
 644                 bool enabled;
 645                 bool force_thru;
 646         } pch_pfit;
 647
 648         /* FDI configuration, only valid if has_pch_encoder is set. */
 649         int fdi_lanes;
 650         struct intel_link_m_n fdi_m_n;
 651
 652         bool ips_enabled;
 653
 654         bool enable_fbc;
 655
 656         bool double_wide;
 657
 658         int pbn;
 659
 660         struct intel_crtc_scaler_state scaler_state;
 661
 662         /* w/a for waiting 2 vblanks during crtc enable */
 663         enum pipe hsw_workaround_pipe;
 664
 665         /* IVB sprite scaling w/a (WaCxSRDisabledForSpriteScaling:ivb) */
 666         bool disable_lp_wm;
 667
 668         struct intel_crtc_wm_state wm;
 669
 670         /* Gamma mode programmed on the pipe */
 671         uint32_t gamma_mode;
 672 };
 673
 674 struct vlv_wm_state {
 675         struct vlv_pipe_wm wm[3];
 676         struct vlv_sr_wm sr[3];
 677         uint8_t num_active_planes;
 678         uint8_t num_levels;
 679         uint8_t level;
 680         bool cxsr;
 681 };
 682
 683 struct intel_crtc {
 684         struct drm_crtc base;
 685         enum pipe pipe;
 686         enum plane plane;
 687         u8 lut_r[256], lut_g[256], lut_b[256];
 688         /*
 689          * Whether the crtc and the connected output pipeline is active. Implies
 690          * that crtc->enabled is set, i.e. the current mode configuration has
 691          * some outputs connected to this crtc.
 692          */
 693         bool active;
 694         unsigned long enabled_power_domains;
 695         bool lowfreq_avail;
 696         struct intel_overlay *overlay;
 697         struct intel_flip_work *flip_work;
 698
 699         atomic_t unpin_work_count;
 700
 701         /* Display surface base address adjustement for pageflips. Note that on
 702          * gen4+ this only adjusts up to a tile, offsets within a tile are
 703          * handled in the hw itself (with the TILEOFF register). */
 704         u32 dspaddr_offset;
 705         int adjusted_x;
 706         int adjusted_y;
 707
 708         uint32_t cursor_addr;
 709         uint32_t cursor_cntl;
 710         uint32_t cursor_size;
 711         uint32_t cursor_base;
 712
 713         struct intel_crtc_state *config;
 714
 715         /* global reset count when the last flip was submitted */
 716         unsigned int reset_count;
 717
 718         /* Access to these should be protected by dev_priv->irq_lock. */
 719         bool cpu_fifo_underrun_disabled;
 720         bool pch_fifo_underrun_disabled;
 721
 722         /* per-pipe watermark state */
 723         struct {
 724                 /* watermarks currently being used  */
 725                 union {
 726                         struct intel_pipe_wm ilk;
 727                 } active;
 728
 729                 /* allow CxSR on this pipe */
 730                 bool cxsr_allowed;
 731         } wm;
 732
 733         int scanline_offset;
 734
 735         struct {
 736                 unsigned start_vbl_count;
 737                 ktime_t start_vbl_time;
 738                 int min_vbl, max_vbl;
 739                 int scanline_start;
 740         } debug;
 741
 742         /* scalers available on this crtc */
 743         int num_scalers;
 744
 745         struct vlv_wm_state wm_state;
 746 };
 747
 748 struct intel_plane_wm_parameters {
 749         uint32_t horiz_pixels;
 750         uint32_t vert_pixels;
 751         /*
 752          *   For packed pixel formats:
 753          *     bytes_per_pixel - holds bytes per pixel
 754          *   For planar pixel formats:
 755          *     bytes_per_pixel - holds bytes per pixel for uv-plane
 756          *     y_bytes_per_pixel - holds bytes per pixel for y-plane
 757          */
 758         uint8_t bytes_per_pixel;
 759         uint8_t y_bytes_per_pixel;
 760         bool enabled;
 761         bool scaled;
 762         u64 tiling;
 763         unsigned int rotation;
 764         uint16_t fifo_size;
 765 };
 766
 767 struct intel_plane {
 768         struct drm_plane base;
 769         int plane;
 770         enum pipe pipe;
 771         bool can_scale;
 772         int max_downscale;
 773         uint32_t frontbuffer_bit;
 774
 775         /* Since we need to change the watermarks before/after
 776          * enabling/disabling the planes, we need to store the parameters here
 777          * as the other pieces of the struct may not reflect the values we want
 778          * for the watermark calculations. Currently only Haswell uses this.
 779          */
 780         struct intel_plane_wm_parameters wm;
 781
 782         /*
 783          * NOTE: Do not place new plane state fields here (e.g., when adding
 784          * new plane properties).  New runtime state should now be placed in
 785          * the intel_plane_state structure and accessed via plane_state.
 786          */
 787
 788         void (*update_plane)(struct drm_plane *plane,
 789                              const struct intel_crtc_state *crtc_state,
 790                              const struct intel_plane_state *plane_state);
 791         void (*disable_plane)(struct drm_plane *plane,
 792                               struct drm_crtc *crtc);
 793         int (*check_plane)(struct drm_plane *plane,
 794                            struct intel_crtc_state *crtc_state,
 795                            struct intel_plane_state *state);
 796 };
 797
 798 struct intel_watermark_params {
 799         u16 fifo_size;
 800         u16 max_wm;
 801         u8 default_wm;
 802         u8 guard_size;
 803         u8 cacheline_size;
 804 };
 805
 806 struct cxsr_latency {
 807         bool is_desktop : 1;
 808         bool is_ddr3 : 1;
 809         u16 fsb_freq;
 810         u16 mem_freq;
 811         u16 display_sr;
 812         u16 display_hpll_disable;
 813         u16 cursor_sr;
 814         u16 cursor_hpll_disable;
 815 };
 816
 817 #define to_intel_atomic_state(x) container_of(x, struct intel_atomic_state, base)
 818 #define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
 819 #define to_intel_crtc_state(x) container_of(x, struct intel_crtc_state, base)
 820 #define to_intel_connector(x) container_of(x, struct intel_connector, base)
 821 #define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
 822 #define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
 823 #define to_intel_plane(x) container_of(x, struct intel_plane, base)
 824 #define to_intel_plane_state(x) container_of(x, struct intel_plane_state, base)
 825 #define intel_fb_obj(x) (x ? to_intel_framebuffer(x)->obj : NULL)
 826
 827 struct intel_hdmi {
 828         i915_reg_t hdmi_reg;
 829         int ddc_bus;
 830         struct {
 831                 enum drm_dp_dual_mode_type type;
 832                 int max_tmds_clock;
 833         } dp_dual_mode;
 834         bool limited_color_range;
 835         bool color_range_auto;
 836         bool has_hdmi_sink;
 837         bool has_audio;
 838         enum hdmi_force_audio force_audio;
 839         bool rgb_quant_range_selectable;
 840         enum hdmi_picture_aspect aspect_ratio;
 841         struct intel_connector *attached_connector;
 842         void (*write_infoframe)(struct drm_encoder *encoder,
 843                                 enum hdmi_infoframe_type type,
 844                                 const void *frame, ssize_t len);
 845         void (*set_infoframes)(struct drm_encoder *encoder,
 846                                bool enable,
 847                                const struct drm_display_mode *adjusted_mode);
 848         bool (*infoframe_enabled)(struct drm_encoder *encoder,
 849                                   const struct intel_crtc_state *pipe_config);
 850 };
 851
 852 struct intel_dp_mst_encoder;
 853 #define DP_MAX_DOWNSTREAM_PORTS         0x10
 854
 855 /*
 856  * enum link_m_n_set:
 857  *      When platform provides two set of M_N registers for dp, we can
 858  *      program them and switch between them incase of DRRS.
 859  *      But When only one such register is provided, we have to program the
 860  *      required divider value on that registers itself based on the DRRS state.
 861  *
 862  * M1_N1        : Program dp_m_n on M1_N1 registers
 863  *                        dp_m2_n2 on M2_N2 registers (If supported)
 864  *
 865  * M2_N2        : Program dp_m2_n2 on M1_N1 registers
 866  *                        M2_N2 registers are not supported
 867  */
 868
 869 enum link_m_n_set {
 870         /* Sets the m1_n1 and m2_n2 */
 871         M1_N1 = 0,
 872         M2_N2
 873 };
 874
 875 struct intel_dp_desc {
 876         u8 oui[3];
 877         u8 device_id[6];
 878         u8 hw_rev;
 879         u8 sw_major_rev;
 880         u8 sw_minor_rev;
 881 } __packed;
 882
 883 struct intel_dp {
 884         i915_reg_t output_reg;
 885         i915_reg_t aux_ch_ctl_reg;
 886         i915_reg_t aux_ch_data_reg[5];
 887         uint32_t DP;
 888         int link_rate;
 889         uint8_t lane_count;
 890         uint8_t sink_count;
 891         bool link_mst;
 892         bool has_audio;
 893         bool detect_done;
 894         bool channel_eq_status;
 895         enum hdmi_force_audio force_audio;
 896         bool limited_color_range;
 897         bool color_range_auto;
 898         uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
 899         uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
 900         uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
 901         uint8_t edp_dpcd[EDP_DISPLAY_CTL_CAP_SIZE];
 902         /* sink rates as reported by DP_SUPPORTED_LINK_RATES */
 903         uint8_t num_sink_rates;
 904         int sink_rates[DP_MAX_SUPPORTED_RATES];
 905         /* sink or branch descriptor */
 906         struct intel_dp_desc desc;
 907         struct drm_dp_aux aux;
 908         uint8_t train_set[4];
 909         int panel_power_up_delay;
 910         int panel_power_down_delay;
 911         int panel_power_cycle_delay;
 912         int backlight_on_delay;
 913         int backlight_off_delay;
 914         struct delayed_work panel_vdd_work;
 915         bool want_panel_vdd;
 916         unsigned long last_power_on;
 917         unsigned long last_backlight_off;
 918         ktime_t panel_power_off_time;
 919
 920         struct notifier_block edp_notifier;
 921
 922         /*
 923          * Pipe whose power sequencer is currently locked into
 924          * this port. Only relevant on VLV/CHV.
 925          */
 926         enum pipe pps_pipe;
 927         /*
 928          * Set if the sequencer may be reset due to a power transition,
 929          * requiring a reinitialization. Only relevant on BXT.
 930          */
 931         bool pps_reset;
 932         struct edp_power_seq pps_delays;
 933
 934         bool can_mst; /* this port supports mst */
 935         bool is_mst;
 936         int active_mst_links;
 937         /* connector directly attached - won't be use for modeset in mst world */
 938         struct intel_connector *attached_connector;
 939
 940         /* mst connector list */
 941         struct intel_dp_mst_encoder *mst_encoders[I915_MAX_PIPES];
 942         struct drm_dp_mst_topology_mgr mst_mgr;
 943
 944         uint32_t (*get_aux_clock_divider)(struct intel_dp *dp, int index);
 945         /*
 946          * This function returns the value we have to program the AUX_CTL
 947          * register with to kick off an AUX transaction.
 948          */
 949         uint32_t (*get_aux_send_ctl)(struct intel_dp *dp,
 950                                      bool has_aux_irq,
 951                                      int send_bytes,
 952                                      uint32_t aux_clock_divider);
 953
 954         /* This is called before a link training is starterd */
 955         void (*prepare_link_retrain)(struct intel_dp *intel_dp);
 956
 957         /* Displayport compliance testing */
 958         unsigned long compliance_test_type;
 959         unsigned long compliance_test_data;
 960         bool compliance_test_active;
 961 };
 962
 963 struct intel_lspcon {
 964         bool active;
 965         enum drm_lspcon_mode mode;
 966         bool desc_valid;
 967 };
 968
 969 struct intel_digital_port {
 970         struct intel_encoder base;
 971         enum port port;
 972         u32 saved_port_bits;
 973         struct intel_dp dp;
 974         struct intel_hdmi hdmi;
 975         struct intel_lspcon lspcon;
 976         enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool);
 977         bool release_cl2_override;
 978         uint8_t max_lanes;
 979 };
 980
 981 struct intel_dp_mst_encoder {
 982         struct intel_encoder base;
 983         enum pipe pipe;
 984         struct intel_digital_port *primary;
 985         struct intel_connector *connector;
 986 };
 987
 988 static inline enum dpio_channel
 989 vlv_dport_to_channel(struct intel_digital_port *dport)
 990 {
 991         switch (dport->port) {
 992         case PORT_B:
 993         case PORT_D:
 994                 return DPIO_CH0;
 995         case PORT_C:
 996                 return DPIO_CH1;
 997         default:
 998                 BUG();
 999         }
1000 }
1001
1002 static inline enum dpio_phy
1003 vlv_dport_to_phy(struct intel_digital_port *dport)
1004 {
1005         switch (dport->port) {
1006         case PORT_B:
1007         case PORT_C:
1008                 return DPIO_PHY0;
1009         case PORT_D:
1010                 return DPIO_PHY1;
1011         default:
1012                 BUG();
1013         }
1014 }
1015
1016 static inline enum dpio_channel
1017 vlv_pipe_to_channel(enum pipe pipe)
1018 {
1019         switch (pipe) {
1020         case PIPE_A:
1021         case PIPE_C:
1022                 return DPIO_CH0;
1023         case PIPE_B:
1024                 return DPIO_CH1;
1025         default:
1026                 BUG();
1027         }
1028 }
1029
1030 static inline struct intel_crtc *
1031 intel_get_crtc_for_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
1032 {
1033         return dev_priv->pipe_to_crtc_mapping[pipe];
1034 }
1035
1036 static inline struct intel_crtc *
1037 intel_get_crtc_for_plane(struct drm_i915_private *dev_priv, enum plane plane)
1038 {
1039         return dev_priv->plane_to_crtc_mapping[plane];
1040 }
1041
1042 struct intel_flip_work {
1043         struct work_struct unpin_work;
1044         struct work_struct mmio_work;
1045
1046         struct drm_crtc *crtc;
1047         struct drm_framebuffer *old_fb;
1048         struct drm_i915_gem_object *pending_flip_obj;
1049         struct drm_pending_vblank_event *event;
1050         atomic_t pending;
1051         u32 flip_count;
1052         u32 gtt_offset;
1053         struct drm_i915_gem_request *flip_queued_req;
1054         u32 flip_queued_vblank;
1055         u32 flip_ready_vblank;
1056         unsigned int rotation;
1057 };
1058
1059 struct intel_load_detect_pipe {
1060         struct drm_atomic_state *restore_state;
1061 };
1062
1063 static inline struct intel_encoder *
1064 intel_attached_encoder(struct drm_connector *connector)
1065 {
1066         return to_intel_connector(connector)->encoder;
1067 }
1068
1069 static inline struct intel_digital_port *
1070 enc_to_dig_port(struct drm_encoder *encoder)
1071 {
1072         return container_of(encoder, struct intel_digital_port, base.base);
1073 }
1074
1075 static inline struct intel_dp_mst_encoder *
1076 enc_to_mst(struct drm_encoder *encoder)
1077 {
1078         return container_of(encoder, struct intel_dp_mst_encoder, base.base);
1079 }
1080
1081 static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
1082 {
1083         return &enc_to_dig_port(encoder)->dp;
1084 }
1085
1086 static inline struct intel_digital_port *
1087 dp_to_dig_port(struct intel_dp *intel_dp)
1088 {
1089         return container_of(intel_dp, struct intel_digital_port, dp);
1090 }
1091
1092 static inline struct intel_digital_port *
1093 hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
1094 {
1095         return container_of(intel_hdmi, struct intel_digital_port, hdmi);
1096 }
1097
1098 /* intel_fifo_underrun.c */
1099 bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
1100                                            enum pipe pipe, bool enable);
1101 bool intel_set_pch_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
1102                                            enum transcoder pch_transcoder,
1103                                            bool enable);
1104 void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
1105                                          enum pipe pipe);
1106 void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
1107                                          enum transcoder pch_transcoder);
1108 void intel_check_cpu_fifo_underruns(struct drm_i915_private *dev_priv);
1109 void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv);
1110
1111 /* i915_irq.c */
1112 void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1113 void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1114 void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 mask);
1115 void gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask);
1116 void gen6_unmask_pm_irq(struct drm_i915_private *dev_priv, u32 mask);
1117 void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1118 void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1119 void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv);
1120 void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv);
1121 void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv);
1122 u32 gen6_sanitize_rps_pm_mask(struct drm_i915_private *dev_priv, u32 mask);
1123 void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv);
1124 void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv);
1125 static inline bool intel_irqs_enabled(struct drm_i915_private *dev_priv)
1126 {
1127         /*
1128          * We only use drm_irq_uninstall() at unload and VT switch, so
1129          * this is the only thing we need to check.
1130          */
1131         return dev_priv->pm.irqs_enabled;
1132 }
1133
1134 int intel_get_crtc_scanline(struct intel_crtc *crtc);
1135 void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
1136                                      unsigned int pipe_mask);
1137 void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
1138                                      unsigned int pipe_mask);
1139 void gen9_reset_guc_interrupts(struct drm_i915_private *dev_priv);
1140 void gen9_enable_guc_interrupts(struct drm_i915_private *dev_priv);
1141 void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv);
1142
1143 /* intel_crt.c */
1144 void intel_crt_init(struct drm_device *dev);
1145 void intel_crt_reset(struct drm_encoder *encoder);
1146
1147 /* intel_ddi.c */
1148 void intel_ddi_clk_select(struct intel_encoder *encoder,
1149                           struct intel_shared_dpll *pll);
1150 void intel_ddi_fdi_post_disable(struct intel_encoder *intel_encoder,
1151                                 struct intel_crtc_state *old_crtc_state,
1152                                 struct drm_connector_state *old_conn_state);
1153 void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder);
1154 void hsw_fdi_link_train(struct drm_crtc *crtc);
1155 void intel_ddi_init(struct drm_device *dev, enum port port);
1156 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
1157 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
1158 void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
1159 void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
1160                                        enum transcoder cpu_transcoder);
1161 void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
1162 void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
1163 bool intel_ddi_pll_select(struct intel_crtc *crtc,
1164                           struct intel_crtc_state *crtc_state);
1165 void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
1166 void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
1167 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
1168 void intel_ddi_get_config(struct intel_encoder *encoder,
1169                           struct intel_crtc_state *pipe_config);
1170 struct intel_encoder *
1171 intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state);
1172
1173 void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder);
1174 void intel_ddi_clock_get(struct intel_encoder *encoder,
1175                          struct intel_crtc_state *pipe_config);
1176 void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state);
1177 uint32_t ddi_signal_levels(struct intel_dp *intel_dp);
1178 struct intel_shared_dpll *intel_ddi_get_link_dpll(struct intel_dp *intel_dp,
1179                                                   int clock);
1180 unsigned int intel_fb_align_height(struct drm_device *dev,
1181                                    unsigned int height,
1182                                    uint32_t pixel_format,
1183                                    uint64_t fb_format_modifier);
1184 u32 intel_fb_stride_alignment(const struct drm_i915_private *dev_priv,
1185                               uint64_t fb_modifier, uint32_t pixel_format);
1186
1187 /* intel_audio.c */
1188 void intel_init_audio_hooks(struct drm_i915_private *dev_priv);
1189 void intel_audio_codec_enable(struct intel_encoder *encoder,
1190                               const struct intel_crtc_state *crtc_state,
1191                               const struct drm_connector_state *conn_state);
1192 void intel_audio_codec_disable(struct intel_encoder *encoder);
1193 void i915_audio_component_init(struct drm_i915_private *dev_priv);
1194 void i915_audio_component_cleanup(struct drm_i915_private *dev_priv);
1195
1196 /* intel_display.c */
1197 enum transcoder intel_crtc_pch_transcoder(struct intel_crtc *crtc);
1198 void skl_set_preferred_cdclk_vco(struct drm_i915_private *dev_priv, int vco);
1199 void intel_update_rawclk(struct drm_i915_private *dev_priv);
1200 int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
1201                       const char *name, u32 reg, int ref_freq);
1202 void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv);
1203 void lpt_disable_iclkip(struct drm_i915_private *dev_priv);
1204 extern const struct drm_plane_funcs intel_plane_funcs;
1205 void intel_init_display_hooks(struct drm_i915_private *dev_priv);
1206 unsigned int intel_fb_xy_to_linear(int x, int y,
1207                                    const struct intel_plane_state *state,
1208                                    int plane);
1209 void intel_add_fb_offsets(int *x, int *y,
1210                           const struct intel_plane_state *state, int plane);
1211 unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info);
1212 bool intel_has_pending_fb_unpin(struct drm_device *dev);
1213 void intel_mark_busy(struct drm_i915_private *dev_priv);
1214 void intel_mark_idle(struct drm_i915_private *dev_priv);
1215 void intel_crtc_restore_mode(struct drm_crtc *crtc);
1216 int intel_display_suspend(struct drm_device *dev);
1217 void intel_pps_unlock_regs_wa(struct drm_i915_private *dev_priv);
1218 void intel_encoder_destroy(struct drm_encoder *encoder);
1219 int intel_connector_init(struct intel_connector *);
1220 struct intel_connector *intel_connector_alloc(void);
1221 bool intel_connector_get_hw_state(struct intel_connector *connector);
1222 void intel_connector_attach_encoder(struct intel_connector *connector,
1223                                     struct intel_encoder *encoder);
1224 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
1225                                              struct drm_crtc *crtc);
1226 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector);
1227 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
1228                                 struct drm_file *file_priv);
1229 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1230                                              enum pipe pipe);
1231 static inline bool
1232 intel_crtc_has_type(const struct intel_crtc_state *crtc_state,
1233                     enum intel_output_type type)
1234 {
1235         return crtc_state->output_types & (1 << type);
1236 }
1237 static inline bool
1238 intel_crtc_has_dp_encoder(const struct intel_crtc_state *crtc_state)
1239 {
1240         return crtc_state->output_types &
1241                 ((1 << INTEL_OUTPUT_DP) |
1242                  (1 << INTEL_OUTPUT_DP_MST) |
1243                  (1 << INTEL_OUTPUT_EDP));
1244 }
1245 static inline void
1246 intel_wait_for_vblank(struct drm_i915_private *dev_priv, enum pipe pipe)
1247 {
1248         drm_wait_one_vblank(&dev_priv->drm, pipe);
1249 }
1250 static inline void
1251 intel_wait_for_vblank_if_active(struct drm_i915_private *dev_priv, int pipe)
1252 {
1253         const struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
1254
1255         if (crtc->active)
1256                 intel_wait_for_vblank(dev_priv, pipe);
1257 }
1258
1259 u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc);
1260
1261 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp);
1262 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1263                          struct intel_digital_port *dport,
1264                          unsigned int expected_mask);
1265 bool intel_get_load_detect_pipe(struct drm_connector *connector,
1266                                 struct drm_display_mode *mode,
1267                                 struct intel_load_detect_pipe *old,
1268                                 struct drm_modeset_acquire_ctx *ctx);
1269 void intel_release_load_detect_pipe(struct drm_connector *connector,
1270                                     struct intel_load_detect_pipe *old,
1271                                     struct drm_modeset_acquire_ctx *ctx);
1272 struct i915_vma *
1273 intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, unsigned int rotation);
1274 void intel_unpin_fb_obj(struct drm_framebuffer *fb, unsigned int rotation);
1275 struct drm_framebuffer *
1276 __intel_framebuffer_create(struct drm_device *dev,
1277                            struct drm_mode_fb_cmd2 *mode_cmd,
1278                            struct drm_i915_gem_object *obj);
1279 void intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, int pipe);
1280 void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe);
1281 void intel_check_page_flip(struct drm_i915_private *dev_priv, int pipe);
1282 int intel_prepare_plane_fb(struct drm_plane *plane,
1283                            struct drm_plane_state *new_state);
1284 void intel_cleanup_plane_fb(struct drm_plane *plane,
1285                             struct drm_plane_state *old_state);
1286 int intel_plane_atomic_get_property(struct drm_plane *plane,
1287                                     const struct drm_plane_state *state,
1288                                     struct drm_property *property,
1289                                     uint64_t *val);
1290 int intel_plane_atomic_set_property(struct drm_plane *plane,
1291                                     struct drm_plane_state *state,
1292                                     struct drm_property *property,
1293                                     uint64_t val);
1294 int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
1295                                     struct drm_plane_state *plane_state);
1296
1297 unsigned int intel_tile_height(const struct drm_i915_private *dev_priv,
1298                                uint64_t fb_modifier, unsigned int cpp);
1299
1300 void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1301                                     enum pipe pipe);
1302
1303 int vlv_force_pll_on(struct drm_i915_private *dev_priv, enum pipe pipe,
1304                      const struct dpll *dpll);
1305 void vlv_force_pll_off(struct drm_i915_private *dev_priv, enum pipe pipe);
1306 int lpt_get_iclkip(struct drm_i915_private *dev_priv);
1307
1308 /* modesetting asserts */
1309 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1310                            enum pipe pipe);
1311 void assert_pll(struct drm_i915_private *dev_priv,
1312                 enum pipe pipe, bool state);
1313 #define assert_pll_enabled(d, p) assert_pll(d, p, true)
1314 #define assert_pll_disabled(d, p) assert_pll(d, p, false)
1315 void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state);
1316 #define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
1317 #define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
1318 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1319                        enum pipe pipe, bool state);
1320 #define assert_fdi_rx_pll_enabled(d, p) assert_fdi_rx_pll(d, p, true)
1321 #define assert_fdi_rx_pll_disabled(d, p) assert_fdi_rx_pll(d, p, false)
1322 void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, bool state);
1323 #define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
1324 #define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
1325 u32 intel_compute_tile_offset(int *x, int *y,
1326                               const struct intel_plane_state *state, int plane);
1327 void intel_prepare_reset(struct drm_i915_private *dev_priv);
1328 void intel_finish_reset(struct drm_i915_private *dev_priv);
1329 void hsw_enable_pc8(struct drm_i915_private *dev_priv);
1330 void hsw_disable_pc8(struct drm_i915_private *dev_priv);
1331 void bxt_init_cdclk(struct drm_i915_private *dev_priv);
1332 void bxt_uninit_cdclk(struct drm_i915_private *dev_priv);
1333 void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
1334 void bxt_enable_dc9(struct drm_i915_private *dev_priv);
1335 void bxt_disable_dc9(struct drm_i915_private *dev_priv);
1336 void gen9_enable_dc5(struct drm_i915_private *dev_priv);
1337 void skl_init_cdclk(struct drm_i915_private *dev_priv);
1338 void skl_uninit_cdclk(struct drm_i915_private *dev_priv);
1339 unsigned int skl_cdclk_get_vco(unsigned int freq);
1340 void skl_enable_dc6(struct drm_i915_private *dev_priv);
1341 void skl_disable_dc6(struct drm_i915_private *dev_priv);
1342 void intel_dp_get_m_n(struct intel_crtc *crtc,
1343                       struct intel_crtc_state *pipe_config);
1344 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n);
1345 int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
1346 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
1347                         struct dpll *best_clock);
1348 int chv_calc_dpll_params(int refclk, struct dpll *pll_clock);
1349
1350 bool intel_crtc_active(struct intel_crtc *crtc);
1351 void hsw_enable_ips(struct intel_crtc *crtc);
1352 void hsw_disable_ips(struct intel_crtc *crtc);
1353 enum intel_display_power_domain
1354 intel_display_port_power_domain(struct intel_encoder *intel_encoder);
1355 enum intel_display_power_domain
1356 intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder);
1357 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
1358                                  struct intel_crtc_state *pipe_config);
1359
1360 int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
1361 int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state);
1362
1363 u32 intel_fb_gtt_offset(struct drm_framebuffer *fb, unsigned int rotation);
1364
1365 u32 skl_plane_ctl_format(uint32_t pixel_format);
1366 u32 skl_plane_ctl_tiling(uint64_t fb_modifier);
1367 u32 skl_plane_ctl_rotation(unsigned int rotation);
1368 u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
1369                      unsigned int rotation);
1370 int skl_check_plane_surface(struct intel_plane_state *plane_state);
1371
1372 /* intel_csr.c */
1373 void intel_csr_ucode_init(struct drm_i915_private *);
1374 void intel_csr_load_program(struct drm_i915_private *);
1375 void intel_csr_ucode_fini(struct drm_i915_private *);
1376 void intel_csr_ucode_suspend(struct drm_i915_private *);
1377 void intel_csr_ucode_resume(struct drm_i915_private *);
1378
1379 /* intel_dp.c */
1380 bool intel_dp_init(struct drm_device *dev, i915_reg_t output_reg, enum port port);
1381 bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
1382                              struct intel_connector *intel_connector);
1383 void intel_dp_set_link_params(struct intel_dp *intel_dp,
1384                               int link_rate, uint8_t lane_count,
1385                               bool link_mst);
1386 void intel_dp_start_link_train(struct intel_dp *intel_dp);
1387 void intel_dp_stop_link_train(struct intel_dp *intel_dp);
1388 void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
1389 void intel_dp_encoder_reset(struct drm_encoder *encoder);
1390 void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
1391 void intel_dp_encoder_destroy(struct drm_encoder *encoder);
1392 int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc);
1393 bool intel_dp_compute_config(struct intel_encoder *encoder,
1394                              struct intel_crtc_state *pipe_config,
1395                              struct drm_connector_state *conn_state);
1396 bool intel_dp_is_edp(struct drm_i915_private *dev_priv, enum port port);
1397 enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port,
1398                                   bool long_hpd);
1399 void intel_edp_backlight_on(struct intel_dp *intel_dp);
1400 void intel_edp_backlight_off(struct intel_dp *intel_dp);
1401 void intel_edp_panel_vdd_on(struct intel_dp *intel_dp);
1402 void intel_edp_panel_on(struct intel_dp *intel_dp);
1403 void intel_edp_panel_off(struct intel_dp *intel_dp);
1404 void intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector);
1405 void intel_dp_mst_suspend(struct drm_device *dev);
1406 void intel_dp_mst_resume(struct drm_device *dev);
1407 int intel_dp_max_link_rate(struct intel_dp *intel_dp);
1408 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
1409 void intel_dp_hot_plug(struct intel_encoder *intel_encoder);
1410 void intel_power_sequencer_reset(struct drm_i915_private *dev_priv);
1411 uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);
1412 void intel_plane_destroy(struct drm_plane *plane);
1413 void intel_edp_drrs_enable(struct intel_dp *intel_dp,
1414                            struct intel_crtc_state *crtc_state);
1415 void intel_edp_drrs_disable(struct intel_dp *intel_dp,
1416                            struct intel_crtc_state *crtc_state);
1417 void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv,
1418                                unsigned int frontbuffer_bits);
1419 void intel_edp_drrs_flush(struct drm_i915_private *dev_priv,
1420                           unsigned int frontbuffer_bits);
1421
1422 void
1423 intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
1424                                        uint8_t dp_train_pat);
1425 void
1426 intel_dp_set_signal_levels(struct intel_dp *intel_dp);
1427 void intel_dp_set_idle_link_train(struct intel_dp *intel_dp);
1428 uint8_t
1429 intel_dp_voltage_max(struct intel_dp *intel_dp);
1430 uint8_t
1431 intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing);
1432 void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
1433                            uint8_t *link_bw, uint8_t *rate_select);
1434 bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp);
1435 bool
1436 intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]);
1437
1438 static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
1439 {
1440         return ~((1 << lane_count) - 1) & 0xf;
1441 }
1442
1443 bool intel_dp_read_dpcd(struct intel_dp *intel_dp);
1444 bool __intel_dp_read_desc(struct intel_dp *intel_dp,
1445                           struct intel_dp_desc *desc);
1446 bool intel_dp_read_desc(struct intel_dp *intel_dp);
1447
1448 /* intel_dp_aux_backlight.c */
1449 int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector);
1450
1451 /* intel_dp_mst.c */
1452 int intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_id);
1453 void intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port);
1454 /* intel_dsi.c */
1455 void intel_dsi_init(struct drm_device *dev);
1456
1457 /* intel_dsi_dcs_backlight.c */
1458 int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector);
1459
1460 /* intel_dvo.c */
1461 void intel_dvo_init(struct drm_device *dev);
1462 /* intel_hotplug.c */
1463 void intel_hpd_poll_init(struct drm_i915_private *dev_priv);
1464
1465
1466 /* legacy fbdev emulation in intel_fbdev.c */
1467 #ifdef CONFIG_DRM_FBDEV_EMULATION
1468 extern int intel_fbdev_init(struct drm_device *dev);
1469 extern void intel_fbdev_initial_config_async(struct drm_device *dev);
1470 extern void intel_fbdev_fini(struct drm_device *dev);
1471 extern void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous);
1472 extern void intel_fbdev_output_poll_changed(struct drm_device *dev);
1473 extern void intel_fbdev_restore_mode(struct drm_device *dev);
1474 #else
1475 static inline int intel_fbdev_init(struct drm_device *dev)
1476 {
1477         return 0;
1478 }
1479
1480 static inline void intel_fbdev_initial_config_async(struct drm_device *dev)
1481 {
1482 }
1483
1484 static inline void intel_fbdev_fini(struct drm_device *dev)
1485 {
1486 }
1487
1488 static inline void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous)
1489 {
1490 }
1491
1492 static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
1493 {
1494 }
1495
1496 static inline void intel_fbdev_restore_mode(struct drm_device *dev)
1497 {
1498 }
1499 #endif
1500
1501 /* intel_fbc.c */
1502 void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
1503                            struct drm_atomic_state *state);
1504 bool intel_fbc_is_active(struct drm_i915_private *dev_priv);
1505 void intel_fbc_pre_update(struct intel_crtc *crtc,
1506                           struct intel_crtc_state *crtc_state,
1507                           struct intel_plane_state *plane_state);
1508 void intel_fbc_post_update(struct intel_crtc *crtc);
1509 void intel_fbc_init(struct drm_i915_private *dev_priv);
1510 void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv);
1511 void intel_fbc_enable(struct intel_crtc *crtc,
1512                       struct intel_crtc_state *crtc_state,
1513                       struct intel_plane_state *plane_state);
1514 void intel_fbc_disable(struct intel_crtc *crtc);
1515 void intel_fbc_global_disable(struct drm_i915_private *dev_priv);
1516 void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
1517                           unsigned int frontbuffer_bits,
1518                           enum fb_op_origin origin);
1519 void intel_fbc_flush(struct drm_i915_private *dev_priv,
1520                      unsigned int frontbuffer_bits, enum fb_op_origin origin);
1521 void intel_fbc_cleanup_cfb(struct drm_i915_private *dev_priv);
1522 void intel_fbc_handle_fifo_underrun_irq(struct drm_i915_private *dev_priv);
1523
1524 /* intel_hdmi.c */
1525 void intel_hdmi_init(struct drm_device *dev, i915_reg_t hdmi_reg, enum port port);
1526 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
1527                                struct intel_connector *intel_connector);
1528 struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
1529 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
1530                                struct intel_crtc_state *pipe_config,
1531                                struct drm_connector_state *conn_state);
1532 void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable);
1533
1534
1535 /* intel_lvds.c */
1536 void intel_lvds_init(struct drm_device *dev);
1537 struct intel_encoder *intel_get_lvds_encoder(struct drm_device *dev);
1538 bool intel_is_dual_link_lvds(struct drm_device *dev);
1539
1540
1541 /* intel_modes.c */
1542 int intel_connector_update_modes(struct drm_connector *connector,
1543                                  struct edid *edid);
1544 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
1545 void intel_attach_force_audio_property(struct drm_connector *connector);
1546 void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
1547 void intel_attach_aspect_ratio_property(struct drm_connector *connector);
1548
1549
1550 /* intel_overlay.c */
1551 void intel_setup_overlay(struct drm_i915_private *dev_priv);
1552 void intel_cleanup_overlay(struct drm_i915_private *dev_priv);
1553 int intel_overlay_switch_off(struct intel_overlay *overlay);
1554 int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
1555                                   struct drm_file *file_priv);
1556 int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
1557                               struct drm_file *file_priv);
1558 void intel_overlay_reset(struct drm_i915_private *dev_priv);
1559
1560
1561 /* intel_panel.c */
1562 int intel_panel_init(struct intel_panel *panel,
1563                      struct drm_display_mode *fixed_mode,
1564                      struct drm_display_mode *downclock_mode);
1565 void intel_panel_fini(struct intel_panel *panel);
1566 void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
1567                             struct drm_display_mode *adjusted_mode);
1568 void intel_pch_panel_fitting(struct intel_crtc *crtc,
1569                              struct intel_crtc_state *pipe_config,
1570                              int fitting_mode);
1571 void intel_gmch_panel_fitting(struct intel_crtc *crtc,
1572                               struct intel_crtc_state *pipe_config,
1573                               int fitting_mode);
1574 void intel_panel_set_backlight_acpi(struct intel_connector *connector,
1575                                     u32 level, u32 max);
1576 int intel_panel_setup_backlight(struct drm_connector *connector,
1577                                 enum pipe pipe);
1578 void intel_panel_enable_backlight(struct intel_connector *connector);
1579 void intel_panel_disable_backlight(struct intel_connector *connector);
1580 void intel_panel_destroy_backlight(struct drm_connector *connector);
1581 enum drm_connector_status intel_panel_detect(struct drm_device *dev);
1582 extern struct drm_display_mode *intel_find_panel_downclock(
1583                                 struct drm_device *dev,
1584                                 struct drm_display_mode *fixed_mode,
1585                                 struct drm_connector *connector);
1586
1587 #if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
1588 int intel_backlight_device_register(struct intel_connector *connector);
1589 void intel_backlight_device_unregister(struct intel_connector *connector);
1590 #else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
1591 static int intel_backlight_device_register(struct intel_connector *connector)
1592 {
1593         return 0;
1594 }
1595 static inline void intel_backlight_device_unregister(struct intel_connector *connector)
1596 {
1597 }
1598 #endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
1599
1600
1601 /* intel_psr.c */
1602 void intel_psr_enable(struct intel_dp *intel_dp);
1603 void intel_psr_disable(struct intel_dp *intel_dp);
1604 void intel_psr_invalidate(struct drm_i915_private *dev_priv,
1605                           unsigned frontbuffer_bits);
1606 void intel_psr_flush(struct drm_i915_private *dev_priv,
1607                      unsigned frontbuffer_bits,
1608                      enum fb_op_origin origin);
1609 void intel_psr_init(struct drm_device *dev);
1610 void intel_psr_single_frame_update(struct drm_i915_private *dev_priv,
1611                                    unsigned frontbuffer_bits);
1612
1613 /* intel_runtime_pm.c */
1614 int intel_power_domains_init(struct drm_i915_private *);
1615 void intel_power_domains_fini(struct drm_i915_private *);
1616 void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
1617 void intel_power_domains_suspend(struct drm_i915_private *dev_priv);
1618 void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
1619 void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
1620 void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
1621 const char *
1622 intel_display_power_domain_str(enum intel_display_power_domain domain);
1623
1624 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
1625                                     enum intel_display_power_domain domain);
1626 bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
1627                                       enum intel_display_power_domain domain);
1628 void intel_display_power_get(struct drm_i915_private *dev_priv,
1629                              enum intel_display_power_domain domain);
1630 bool intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
1631                                         enum intel_display_power_domain domain);
1632 void intel_display_power_put(struct drm_i915_private *dev_priv,
1633                              enum intel_display_power_domain domain);
1634
1635 static inline void
1636 assert_rpm_device_not_suspended(struct drm_i915_private *dev_priv)
1637 {
1638         WARN_ONCE(dev_priv->pm.suspended,
1639                   "Device suspended during HW access\n");
1640 }
1641
1642 static inline void
1643 assert_rpm_wakelock_held(struct drm_i915_private *dev_priv)
1644 {
1645         assert_rpm_device_not_suspended(dev_priv);
1646         /* FIXME: Needs to be converted back to WARN_ONCE, but currently causes
1647          * too much noise. */
1648         if (!atomic_read(&dev_priv->pm.wakeref_count))
1649                 DRM_DEBUG_DRIVER("RPM wakelock ref not held during HW access");
1650 }
1651
1652 /**
1653  * disable_rpm_wakeref_asserts - disable the RPM assert checks
1654  * @dev_priv: i915 device instance
1655  *
1656  * This function disable asserts that check if we hold an RPM wakelock
1657  * reference, while keeping the device-not-suspended checks still enabled.
1658  * It's meant to be used only in special circumstances where our rule about
1659  * the wakelock refcount wrt. the device power state doesn't hold. According
1660  * to this rule at any point where we access the HW or want to keep the HW in
1661  * an active state we must hold an RPM wakelock reference acquired via one of
1662  * the intel_runtime_pm_get() helpers. Currently there are a few special spots
1663  * where this rule doesn't hold: the IRQ and suspend/resume handlers, the
1664  * forcewake release timer, and the GPU RPS and hangcheck works. All other
1665  * users should avoid using this function.
1666  *
1667  * Any calls to this function must have a symmetric call to
1668  * enable_rpm_wakeref_asserts().
1669  */
1670 static inline void
1671 disable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
1672 {
1673         atomic_inc(&dev_priv->pm.wakeref_count);
1674 }
1675
1676 /**
1677  * enable_rpm_wakeref_asserts - re-enable the RPM assert checks
1678  * @dev_priv: i915 device instance
1679  *
1680  * This function re-enables the RPM assert checks after disabling them with
1681  * disable_rpm_wakeref_asserts. It's meant to be used only in special
1682  * circumstances otherwise its use should be avoided.
1683  *
1684  * Any calls to this function must have a symmetric call to
1685  * disable_rpm_wakeref_asserts().
1686  */
1687 static inline void
1688 enable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
1689 {
1690         atomic_dec(&dev_priv->pm.wakeref_count);
1691 }
1692
1693 void intel_runtime_pm_get(struct drm_i915_private *dev_priv);
1694 bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv);
1695 void intel_runtime_pm_get_noresume(struct drm_i915_private *dev_priv);
1696 void intel_runtime_pm_put(struct drm_i915_private *dev_priv);
1697
1698 void intel_display_set_init_power(struct drm_i915_private *dev, bool enable);
1699
1700 void chv_phy_powergate_lanes(struct intel_encoder *encoder,
1701                              bool override, unsigned int mask);
1702 bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
1703                           enum dpio_channel ch, bool override);
1704
1705
1706 /* intel_pm.c */
1707 void intel_init_clock_gating(struct drm_i915_private *dev_priv);
1708 void intel_suspend_hw(struct drm_i915_private *dev_priv);
1709 int ilk_wm_max_level(const struct drm_i915_private *dev_priv);
1710 void intel_update_watermarks(struct intel_crtc *crtc);
1711 void intel_init_pm(struct drm_i915_private *dev_priv);
1712 void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv);
1713 void intel_pm_setup(struct drm_device *dev);
1714 void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
1715 void intel_gpu_ips_teardown(void);
1716 void intel_init_gt_powersave(struct drm_i915_private *dev_priv);
1717 void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv);
1718 void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv);
1719 void intel_enable_gt_powersave(struct drm_i915_private *dev_priv);
1720 void intel_autoenable_gt_powersave(struct drm_i915_private *dev_priv);
1721 void intel_disable_gt_powersave(struct drm_i915_private *dev_priv);
1722 void intel_suspend_gt_powersave(struct drm_i915_private *dev_priv);
1723 void gen6_rps_busy(struct drm_i915_private *dev_priv);
1724 void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
1725 void gen6_rps_idle(struct drm_i915_private *dev_priv);
1726 void gen6_rps_boost(struct drm_i915_private *dev_priv,
1727                     struct intel_rps_client *rps,
1728                     unsigned long submitted);
1729 void intel_queue_rps_boost_for_request(struct drm_i915_gem_request *req);
1730 void vlv_wm_get_hw_state(struct drm_device *dev);
1731 void ilk_wm_get_hw_state(struct drm_device *dev);
1732 void skl_wm_get_hw_state(struct drm_device *dev);
1733 void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv,
1734                           struct skl_ddb_allocation *ddb /* out */);
1735 void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc,
1736                               struct skl_pipe_wm *out);
1737 bool intel_can_enable_sagv(struct drm_atomic_state *state);
1738 int intel_enable_sagv(struct drm_i915_private *dev_priv);
1739 int intel_disable_sagv(struct drm_i915_private *dev_priv);
1740 bool skl_wm_level_equals(const struct skl_wm_level *l1,
1741                          const struct skl_wm_level *l2);
1742 bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry **entries,
1743                                  const struct skl_ddb_entry *ddb,
1744                                  int ignore);
1745 uint32_t ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config);
1746 bool ilk_disable_lp_wm(struct drm_device *dev);
1747 int sanitize_rc6_option(struct drm_i915_private *dev_priv, int enable_rc6);
1748 static inline int intel_enable_rc6(void)
1749 {
1750         return i915.enable_rc6;
1751 }
1752
1753 /* intel_sdvo.c */
1754 bool intel_sdvo_init(struct drm_device *dev,
1755                      i915_reg_t reg, enum port port);
1756
1757
1758 /* intel_sprite.c */
1759 int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
1760                              int usecs);
1761 struct intel_plane *intel_sprite_plane_create(struct drm_i915_private *dev_priv,
1762                                               enum pipe pipe, int plane);
1763 int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
1764                               struct drm_file *file_priv);
1765 void intel_pipe_update_start(struct intel_crtc *crtc);
1766 void intel_pipe_update_end(struct intel_crtc *crtc, struct intel_flip_work *work);
1767
1768 /* intel_tv.c */
1769 void intel_tv_init(struct drm_device *dev);
1770
1771 /* intel_atomic.c */
1772 int intel_connector_atomic_get_property(struct drm_connector *connector,
1773                                         const struct drm_connector_state *state,
1774                                         struct drm_property *property,
1775                                         uint64_t *val);
1776 struct drm_crtc_state *intel_crtc_duplicate_state(struct drm_crtc *crtc);
1777 void intel_crtc_destroy_state(struct drm_crtc *crtc,
1778                                struct drm_crtc_state *state);
1779 struct drm_atomic_state *intel_atomic_state_alloc(struct drm_device *dev);
1780 void intel_atomic_state_clear(struct drm_atomic_state *);
1781 struct intel_shared_dpll_config *
1782 intel_atomic_get_shared_dpll_state(struct drm_atomic_state *s);
1783
1784 static inline struct intel_crtc_state *
1785 intel_atomic_get_crtc_state(struct drm_atomic_state *state,
1786                             struct intel_crtc *crtc)
1787 {
1788         struct drm_crtc_state *crtc_state;
1789         crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
1790         if (IS_ERR(crtc_state))
1791                 return ERR_CAST(crtc_state);
1792
1793         return to_intel_crtc_state(crtc_state);
1794 }
1795
1796 static inline struct intel_plane_state *
1797 intel_atomic_get_existing_plane_state(struct drm_atomic_state *state,
1798                                       struct intel_plane *plane)
1799 {
1800         struct drm_plane_state *plane_state;
1801
1802         plane_state = drm_atomic_get_existing_plane_state(state, &plane->base);
1803
1804         return to_intel_plane_state(plane_state);
1805 }
1806
1807 int intel_atomic_setup_scalers(struct drm_device *dev,
1808         struct intel_crtc *intel_crtc,
1809         struct intel_crtc_state *crtc_state);
1810
1811 /* intel_atomic_plane.c */
1812 struct intel_plane_state *intel_create_plane_state(struct drm_plane *plane);
1813 struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
1814 void intel_plane_destroy_state(struct drm_plane *plane,
1815                                struct drm_plane_state *state);
1816 extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
1817
1818 /* intel_color.c */
1819 void intel_color_init(struct drm_crtc *crtc);
1820 int intel_color_check(struct drm_crtc *crtc, struct drm_crtc_state *state);
1821 void intel_color_set_csc(struct drm_crtc_state *crtc_state);
1822 void intel_color_load_luts(struct drm_crtc_state *crtc_state);
1823
1824 /* intel_lspcon.c */
1825 bool lspcon_init(struct intel_digital_port *intel_dig_port);
1826 void lspcon_resume(struct intel_lspcon *lspcon);
1827 #endif /* __INTEL_DRV_H__ */